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Comparative Study of Ammunition Wastewater Pretreatment by Fe/Cu/Air and Fe-0/Air Processes

机译:Fe / Cu /空气和Fe-0 /空气工艺预处理弹药废水的比较研究

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摘要

Fe/Cu bimetallic particles have been proposed as a viable technology for reduction of nitroaromatic pollutants from aqueous solution; however, little data are currently available on its applicability in actual ammunition wastewater. In this study, prepared microsized Fe/Cu bimetallic particles were used to pretreat toxic and refractory ammunition wastewater under oxic conditions. Four key operational parameters, including initial pH (2.0-7.5), aeration rate (0-2.0L/min), Fe/Cu dosage (5-40g/L), and reaction time (0-120min), were optimized, respectively. Furthermore, a Fe-0/air process as the control experiment of Fe/Cu/air process was set up under optimal conditions. According to results of COD removal, decoloration, and B/C ratio, the Fe/Cu/air process had a higher treatment efficiency for ammunition wastewater compared with Fe-0/air process due to the high reactive Fe/Cu bimetallic particles. Finally, analysis of UV-vis, excitation and emission matrix, and fourier transform infrared reveals that the toxic and refractory pollutants in ammunition wastewater could be decomposed effectively by the Fe/Cu/air process, and they also confirmed the superiority of Fe/Cu/air process. Gas chromatography mass spectrometry (GC-MS) suggests that all nitro-aromatic pollutants in ammunition wastewater were removed completely.
机译:已经提出铁/铜双金属颗粒作为减少水溶液中硝基芳族污染物的可行技术。但是,目前尚无关于其在实际弹药废水中的适用性的数据。在这项研究中,制备的超细铁/铜双金属颗粒用于在有氧条件下预处理有毒和难处理的弹药废水。分别优化了四个关键操作参数,包括初始pH值(2.0-7.5),充气速率(0-2.0L / min),Fe / Cu剂量(5-40g / L)和反应时间(0-120min)。 。此外,在最佳条件下建立了Fe-0 /空气工艺作为Fe / Cu /空气工艺的控制实验。根据COD去除,脱色和B / C比的结果,与Fe-0 /空气工艺相比,Fe / Cu /空气工艺对弹药废水的处理效率更高,这是由于Fe / Cu双金属颗粒具有较高的反应性。最后,通过对紫外可见光,激发和发射矩阵以及傅立叶变换红外光谱的分析表明,Fe / Cu /空气工艺可有效分解弹药废水中的有毒难处理污染物,并证实了Fe / Cu的优越性。 / air过程。气相色谱质谱法(GC-MS)表明,弹药废水中的所有硝基芳族污染物均已完全去除。

著录项

  • 来源
    《Environmental Engineering Science》 |2017年第3期|197-206|共10页
  • 作者单位

    Sichuan Univ, Sch Architecture & Environm, Dept Environm Sci & Engn, Chengdu 610065, Peoples R China;

    Sichuan Univ, Sch Architecture & Environm, Dept Environm Sci & Engn, Chengdu 610065, Peoples R China;

    Sichuan Univ, Sch Architecture & Environm, Dept Environm Sci & Engn, Chengdu 610065, Peoples R China;

    Sichuan Univ, Sch Architecture & Environm, Dept Environm Sci & Engn, Chengdu 610065, Peoples R China;

    Chinese Res Inst Environm Sci, Res Ctr Water Pollut Control Technol, Beijing, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ammunition wastewater; biodegradability; Fe/Cu/air; Fe-0/air; pretreatment;

    机译:弹药废水;生物降解性;Fe / Cu /空气;Fe-0 /空气;预处理;
  • 入库时间 2022-08-17 13:28:32

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